fire escape vs emergency exit

fire escape and emergency exit both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire escape	Yes	No	No	No
emergency exit	Yes	No	No	No

As nouns, fire escape and emergency exit are synonyms defined as:

fire escape and emergency exit: a stairway (often on the outside of a building) that permits exit in the case of fire or other emergency

fire escape (noun)	emergency exit (noun)
a stairway (often on the outside of a building) that permits exit in the case of fire or other emergency	a stairway (often on the outside of a building) that permits exit in the case of fire or other emergency